9th session loss of memory

I had my 9th session today. So far I had had pretty intense experiences with dissociation and derealization, some of them have been extremely emotional and/or scary, but today was different. I do up front work with intention setting, music, soft blanket etc. but today I felt legitimately trapped in a nightmare where reality was 100% gone- unsure what I was, what words were, what body parts were, no memory of what life was like before this experience and it was terrifying. I remember being in the chair at the beginning and on the floor at the end of the session. I was very dizzy after and had to wait an extra 30 min before I could walk in order to leave. When I got home I had a pretty big lump above my eye and a bruise forming. I have no memory of falling or running into anything. I think that spravato is helping but this was terrifying and I’m worried about having this kind of experience again. the technician did tell me that this batch seemed to be causing really intense reactions in people, even those who usually don’t have reactions/side effects, and I am definitely on the more sensitive side and tend to react more at baseline. Has anyone noticed this kind of variability in the same dose but different batches? I sent the clinic a message when I got home and realized what happened with my face being bruised and asked about lowering the dose or maybe a different set up so I’m not doing whatever I did to hurt myself. Would love to hear any similar experiences or tips.